New high-resolution reflective liquid crystal light valve projector: Electrohome DLV 1280

John W. Bowron; Terry C. Schmidt

doi:10.1117/12.305519

17 April 1998 New high-resolution reflective liquid crystal light valve projector: Electrohome DLV 1280

John W. Bowron, Terry C. Schmidt

Proceedings Volume 3296, Projection Displays IV; (1998) https://doi.org/10.1117/12.305519
Event: Photonics West '98 Electronic Imaging, 1998, San Jose, CA, United States

Abstract

A new projection system using three IBM 1.3 inch diagonal reflective light valve panels will be described. The 1280 X 1024 pixel reflective panels achieve a high aperture ratio of greater than 90 percent, and have a very fast response time to support high quality video images. The light engine uses plate dichroic mirrors to split the white light into red green and blue channels, an X-cube color combiner is used to recombine the images into a single projection lens. A polarizing beam splitting cube is used for each channel to direct polarized light onto the panels and to act as analyzers for the polarized output. The system, which uses a 500 watt Xenon lamp, will produce more than 3 times the ANSI lumens of most CRT projectors. This lamp is also dimmable allowing the user to match brightness levels in multiple screen applications, while maintaining color temperature. Key performance characteristics will be discussed and a light budget of system losses will be presented.

Citation Download Citation

John W. Bowron and Terry C. Schmidt "New high-resolution reflective liquid crystal light valve projector: Electrohome DLV 1280", Proc. SPIE 3296, Projection Displays IV, (17 April 1998); https://doi.org/10.1117/12.305519

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